New results on B{yields}{pi},K,{eta} decay form factors from light-cone sum rules

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.014015· OSTI ID:20705712

Ball, Patricia ^[1]; Zwicky, Roman ^[2]

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1. IPPP, Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)
2. William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

We present an improved calculation of B{yields} light pseudoscalar form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading-order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is 10 to 13% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters, in particular, those describing the twist-2 distribution amplitudes of the {pi}, K, and {eta}. We present our results in a way which details the dependence of the form factors on these parameters and facilitates the incorporation of future updates of their values from, e.g., lattice calculations.

• OSTI ID: 20705712
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
B MESONS
DISTRIBUTION
ETA MESONS
FORM FACTORS
HADRONIC PARTICLE DECAY
KAONS
LIGHT CONE
MOMENTUM TRANSFER
PIONS
QUANTUM CHROMODYNAMICS
RADIATIVE CORRECTIONS
SEMILEPTONIC DECAY
SUM RULES